A major earthquake of 7.4 magnitude struck in the Pacific Ocean more than 1,000 miles west of Anchorage on Thursday, prompting a brief tsunami warning for part of the remote Aleutian Islands chain. No damage or injuries were reported. The warning, which extended for roughly 800 miles — from Unimak Pass, northeast of Dutch Harbor, westward to Amchitka Pass, west of Adak Island — was canceled after a little more than an hour. A tsunami wave measuring just 6 centimeters tall was recorded at Nikolski, a tiny Aleut village on the island of Umnak, and a 10-centimeter wave was observed at Adak, said Becki Legatt, a spokeswoman for the West Coast and Alaska Tsunami Warning Center in Palmer, Alaska. The coast of the entire Alaska peninsula and all of the Alaska mainland were never considered to be threatened.

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Major quakes strike in Pacific off Alaska

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